So, have you ever wondered why we have seasons? Or maybe where the sun goes when it's night time? *Hint: It doesn't actually go anywhere* In this episode of Crash Course Kids, Sabrina talks about the Earth's rotation and revolution and...

Correction

07:11 We made a conversion error! The asteroid in this sentence should be 95,000 meters or 95 km. The conclusion (water would be deadly hot and sterilized) is cor

rect.

Let's face it: The Earth is going to get...

The Giant's Causeway is a rock formation that is so otherworldly that it seems like it was made by supernatural beings. But these incredible hexagonal columns of rock aren't the result of giant masons. They formed through a quirk of...

Squeaks is back from his trip around the world! In this episode, he and Jessi discuss the second stop on his trip: Fiordlands National Park (aka Te Rua-o-te-moko) in New Zealand (aka Aotearoa)<br/>

Long-jawed proboscideans were doing pretty well for themselves. That is, until they were all rapidly replaced with proboscideans with long, flexible trunks instead: mammoths, mastodons, and our modern elephants.What suddenly made long...

Climbing to the summit of the Eurasian food chain was one of the Neandertals’ most impressive evolutionary feats, but in the end, it may have actually been what doomed them.

Predictive analytics uses math and historical data to make predictions about the future. It’s used in commerce, sports, politics, social media and tons of other places. And as it turns out, people have been using math to predict people’s...

Despite what you may have heard or learned in school, the sun is NOT in fact the center of the solar system. And it won’t be until 2027… But this being a science channel, you might be thinking “What the heck is this guy talking about? Of...

How did sauropods, uniquely large land animals, actually live, with their anatomy and physiology pushed to such extremes? Well, their unprecedented gigantism came with some equally massive costs…

It's no secret that people like pretty stuff, or that we like to make our worlds as pretty as possible. And for centuries, tons of people have used the mineral in this month's Rocks Box to paint the towns blue, so let's talk about some...

Sometimes, humans invent a technology that changes the game. From ancient hand axes to gunpowder, here are 6 weapons that changed the course of human history.<b<br/>r/>

Hosted by: Reid Reimers (he/him)

From hypothetical magnetic levitation trains and space elevators that aren't even attached to the ground, to very real space cannons tested in the 1960s, humans have come up with a lot of ways to hurl stuff into outer...

Biology connects all of life—all of YOUR life. In the final episode of Crash Course Biology, Dr. Sammy is taking your questions. No matter how big, small, or personal, biology is in them all! He’ll show us how biology can help us solve...

The cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has advanced. In this episode of Crash Course Biology, we’ll take a look at the difference between...

What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex species we are today.

Confidence doesn’t come before action — it comes from taking action, says business leader Kat Cole, who worked her way up from waitress to CEO of a global health company. She presents a simple yet powerful practice called the "hot shot...

Many of us have experienced feeling stuck. People often report feeling highly motivated at the start and end of a project, but the middle can feel untethered. It can happen when tackling something as simple as a term paper or as...

Venezuela’s Lake Maracaibo is home to a legendary lightning storm that has been going on for over 500 years.

A person’s genes alone don’t tell us enough about how to most effectively treat their cancer.

When a ship sinks, lots of factors, like the ship’s materials, the water quality, and the depth of the seafloor all play a role in determining how long the ship will last down there - as a result, the Titanic will be gone in fifty years,...

The legal actions against Telegram founder Pavel Durov highlight critical issues surrounding digital communication platforms. With Durov ordered to report to French authorities biweekly following his release, the case raises questions...

Friendships can change how we see and move through the world. They can boost our academic performance, help us deal with setbacks, and even improve our health. And the relationships we form in adolescence can shape our beliefs, values,...

Long ago, an emperor decided to build a great wall to protect his new empire and ensure his power. He ordered men across China to leave their homes and submit to the grueling labor required for its construction. As years passed and the...

In 1954, Joseph Murray attempted a type of kidney swap that no doctor had tried before. The surgery was a success, and the patient would go on to live with the transplanted organ thanks to one key factor: it came from his identical twin....